3.5 Carat Radiant Natural Diamond Prices Comparison
As of October 2026, 3.5 carat radiant natural diamonds in the 3.50–3.99 carat benchmark range usually range from $1,456 to $135,509, with an average price of $49,545.In the last month, prices for these diamonds are flat -0%.Compare 130 verified listings across 10 retailers tracked by CaratRadar.
3.5 Carat Radiant Natural Diamond Market Overview
CaratRadar currently tracks 130 verified 3.5-carat radiant natural diamonds in the 3.50–3.99 carat benchmark range, listed across 10 online retailers. Prices in this segment range from $1,456 to $135,509, with an average asking price of $49,545 and a median of $49,853.
The price spread of $134,053 (98.9% from highest to lowest) highlights why comparing identical certified diamonds across multiple retailers matters. Two identical certified diamonds can differ by hundreds or even thousands of dollars depending on the retailer.
These figures use the same benchmark range throughout the page and are based on our latest daily market data, matched by certification lab and certificate number across retailers, so you are comparing the exact same diamond.
130 diamonds tracked in the 3.50–3.99 carat benchmark
Price range: $1,456 to $135,509
Average price: $49,545
Median price: $49,853
Available across 10 retailers
Savings potential: up to 98.9%
Price Range Overview
As of Oct 13, 2026Real market range for this carat, shape, and diamond type.
130
$1,456
$49,545
$49,853
$135,509
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers in the same benchmark range and open any listing for full details.
GIA | 3.5ct | Radiant | J | SI2 | Excellent
From $20,079
Compare at $21,064
Save 20.6%GIA | 3.51ct | Radiant | L | VVS2 | Very Good
From $20,763
Compare at $26,151
Save 20.6%GIA | 3.52ct | Radiant | K | VVS1 | Excellent
From $21,155
Compare at $26,643
Save 19.6%GIA | 3.52ct | Radiant | K | VS2 | Excellent
From $23,154
Compare at $28,798
Save 19.6%GIA | 3.51ct | Radiant | K | SI1 | Ideal
From $23,957
Compare at $29,799
GIA | 3.51ct | Radiant | J | SI2 | Ideal
From $24,746
Compare at $24,943
Save 18%GIA | 3.53ct | Radiant | K | VS2 | Ideal
From $25,501
Compare at $31,094
Save 17.1%GIA | 3.51ct | Radiant | K | VVS1 | Very Good
From $26,670
Compare at $32,190
GIA | 3.58ct | Radiant | K | VVS2 | Excellent
From $29,132
Compare at $32,115
GIA | 3.71ct | Radiant | FANCY | VVS1 | Very Good
From $29,393
Compare at $29,566
GIA | 3.76ct | Radiant | FANCY | VS1 | Very Good
From $30,884
Compare at $31,056
Save 19.1%GIA | 3.53ct | Radiant | J | SI1 | Ideal
From $32,377
Compare at $40,023
Save 15%GIA | 3.52ct | Radiant | I | VS2 | Ideal
From $33,385
Compare at $39,285
Save 17.1%GIA | 3.51ct | Radiant | J | SI1 | Excellent
From $33,412
Compare at $40,326
Save 17.1%GIA | 3.5ct | Radiant | J | VS1 | Excellent
From $33,604
Compare at $40,559
Save 21.2%GIA | 3.52ct | Radiant | J | SI1 | Excellent
From $34,560
Compare at $43,858
GIA | 3.5ct | Radiant | J | VVS2 | Excellent
From $34,871
Compare at $38,613
Save 17.2%GIA | 3.5ct | Radiant | J | VS2 | Excellent
From $35,353
Compare at $42,677
GIA | 3.5ct | Radiant | J | VS2 | Excellent
From $35,457
Compare at $39,285
Save 17.2%GIA | 3.53ct | Radiant | I | SI2 | Excellent
From $35,837
Compare at $43,263
Save 22.4%GIA | 3.53ct | Radiant | I | VS2 | Very Good
From $37,012
Compare at $47,678
Save 21.2%GIA | 3.51ct | Radiant | H | SI2 | Excellent
From $37,614
Compare at $47,728
Save 13.4%GIA | 3.53ct | Radiant | H | VVS1 | Excellent
From $37,880
Compare at $43,744
GIA | 3.6ct | Radiant | F | SI2 | Very Good
From $38,250
Compare at $41,903
Save 24.2%GIA | 3.74ct | Radiant | I | SI1 | Excellent
From $38,337
Compare at $50,581
Save 16.2%GIA | 3.51ct | Radiant | I | VS2 | Excellent
From $39,001
Compare at $46,562
Save 24.8%GIA | 3.51ct | Radiant | I | SI1 | Very Good
From $39,023
Compare at $51,913
Save 19.9%GIA | 3.5ct | Radiant | I | SI1 | Ideal
From $39,278
Compare at $49,058
Save 39.2%GIA | 3.5ct | Radiant | I | SI2 | Very Good
From $39,304
Compare at $64,601
Save 21.2%GIA | 3.51ct | Radiant | I | VS1 | Ideal
From $39,405
Compare at $49,997
Save 15.9%GIA | 3.5ct | Radiant | D | SI2 | Very Good
From $39,560
Compare at $47,021
Save 17.6%GIA | 3.51ct | Radiant | E | SI2 | Excellent
From $40,179
Compare at $48,744
Save 15.9%GIA | 3.51ct | Radiant | G | SI1 | Excellent
From $40,600
Compare at $48,250
GIA | 3.53ct | Radiant | I | VS1 | Ideal
From $40,819
Compare at $40,945
Save 18.7%GIA | 3.56ct | Radiant | I | SI1 | Excellent
From $40,935
Compare at $50,330
HRD | 3.5ct | Radiant | G | SI1 | Ideal
From $41,000
Compare at $43,827
Save 17.6%GIA | 3.51ct | Radiant | I | SI1 | Ideal
From $41,119
Compare at $49,890
Save 21.2%GIA | 3.51ct | Radiant | I | VS2 | Very Good
From $41,336
Compare at $52,443
Save 19.1%GIA | 3.53ct | Radiant | I | VS2 | Excellent
From $41,380
Compare at $51,169
Save 17.6%GIA | 3.51ct | Radiant | I | SI2 | Very Good
From $41,429
Compare at $50,266
GIA | 3.6ct | Radiant | I | SI1 | Excellent
From $41,436
Compare at $44,579
Save 21.2%GIA | 3.52ct | Radiant | G | SI2 | Excellent
From $41,913
Compare at $53,174
Save 21.2%GIA | 3.54ct | Radiant | D | SI2 | Very Good
From $42,151
Compare at $53,476
Save 12.6%GIA | 3.51ct | Radiant | D | SI1 | Ideal
From $42,200
Compare at $48,285
Save 17.6%GIA | 3.57ct | Radiant | I | VS2 | Excellent
From $42,218
Compare at $51,227
Save 10.4%GIA | 3.51ct | Radiant | G | SI2 | Excellent
From $42,394
Compare at $47,313
Save 17.6%GIA | 3.6ct | Radiant | I | VS1 | Excellent
From $43,316
Compare at $52,562
Save 21.2%GIA | 3.7ct | Radiant | J | VS1 | Excellent
From $43,636
Compare at $55,358
Save 18.7%GIA | 3.51ct | Radiant | E | SI2 | Ideal
From $43,678
Compare at $53,703
Save 21.2%GIA | 3.51ct | Radiant | I | SI1 | Excellent
From $43,863
Compare at $55,646
Entry pricing in this benchmark range starts around $1,456.
What to Know When Shopping for 3.5 Carat Radiant Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $134,053 or more.
- Focus on the 4Cs that matter most to you. Color and clarity grades drive price more than cut in many segments, but cut affects sparkle the most.
- The median price of $49,853 is a useful benchmark. If you see a deal significantly below this, verify the retailer's reputation and return policy.
- Consider eye-clean alternatives. Moving one clarity grade down (e.g., VS2 to SI1) can save 10-15% with no visible difference to the naked eye.
- Compare natural vs. lab-grown options for the same carat and shape. Lab-grown diamonds are chemically identical but often 30-50% less expensive.
- Check shipping, insurance, and return policies. The lowest sticker price is not always the best deal once you factor in total cost of purchase.
- Radiant cuts combine the elegance of emerald shapes with the brilliance of round cuts, offering good value per carat.
Frequently Asked Questions
We currently track 130 comparable stones in the 3.50–3.99 carat benchmark range. Prices start around $1,456 and go up to $135,509.
Based on the latest market data, the average asking price is about $49,545 with a median around $49,853.
The observed spread is roughly $134,053 across tracked listings, which is about 98.9% from highest to lowest offer in the 3.50–3.99 carat benchmark range.
We refresh pricing data daily so these pages stay current with market changes.
Based on completed market data, the fair market benchmark is $49,545. The median price is $49,853, so offers between the median and fair benchmark can be reasonable, while reputable listings below the median may be especially competitive.
We currently track this stone category across 10 online retailers, giving you a broad view of the competitive landscape.
For most buyers, color differences below G are hard to detect once set in a ring. Clarity grades of VS2 and above are typically eye-clean. Prioritize cut quality for maximum brilliance, then balance color and clarity based on your budget.
Retailer pricing strategies, overhead costs, and margin targets all contribute. The exact certified diamond can differ by $134,053 across sellers, which is why direct certified-diamond comparison is essential.
We match diamonds across retailers by their certification lab and certificate number. This means the prices you see are for the exact same physical diamond, not just stones with similar specs. It is a true apples-to-apples comparison.
Diamond prices fluctuate based on supply and demand. Our data refreshes regularly so you can track trends over time. Use the price range on this page as a benchmark and compare it to historical averages when available.
Diamond Terminology
- Carat
- A unit of weight for diamonds equal to 200 milligrams. Larger carat weights are exponentially rarer, which is why prices increase non-linearly with size.
- Cut
- Refers to how well a diamond's facets interact with light. Cut quality ranges from Ideal to Poor and is the single biggest factor affecting a diamond's brilliance.
- Color
- Grades a diamond's lack of color on a scale from D (colorless) to Z (light yellow). Grades D-F are considered colorless; G-J are near-colorless and offer good value.
- Clarity
- Measures the presence of internal inclusions or surface blemishes. Grades range from Flawless (FL) to Included (I3). Most inclusions in VS2 and above are invisible to the naked eye.
Related Price Categories
Explore adjacent carat ranges and shapes to compare market shifts.
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Tracking Natural inventory for the 3.50–3.99 carat Radiant diamond benchmark.